Apparatus

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sensors Mode-S transponder

A15275

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N1844J · PIPER PA-28-140/150/160/180 · operated by SWANBERG BRIAN M, STRUCK BUD G

Hex
A15275
Octal
50251165
Decimal
10,572,405
Country
US
Tail
N1844J
Type
P28A
No current signal · last broadcast 5h ago
Flights observed
52
Distinct callsigns
1
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A15275.

Country allocation

The ICAO 24-bit address A15275 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
N1844J - 52 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-20 N1844J - Jul 20, 23:50 UTCJul 21, 00:40 UTC50m
2026-07-20 N1844J - Jul 20, 16:40 UTCJul 20, 17:30 UTC50m
2026-07-19 N1844J - Jul 19, 22:00 UTCJul 19, 22:50 UTC50m
2026-07-19 N1844J - Jul 19, 19:45 UTCJul 19, 20:30 UTC45m
2026-07-15 N1844J - Jul 15, 22:55 UTCJul 16, 00:10 UTC1h 15m
2026-07-15 N1844J - Jul 15, 21:55 UTCJul 15, 22:20 UTC25m
2026-07-08 N1844J - Jul 8, 00:00 UTCJul 8, 00:35 UTC35m
2026-07-07 N1844J - Jul 7, 23:05 UTCJul 7, 23:25 UTC20m
2026-07-06 N1844J - Jul 6, 16:15 UTCJul 6, 17:30 UTC1h 15m
2026-07-02 N1844J - Jul 2, 23:25 UTCJul 2, 23:35 UTC10m
2026-07-02 N1844J - Jul 2, 23:00 UTCJul 2, 23:05 UTC5m
2026-07-02 N1844J - Jul 2, 01:55 UTCJul 2, 02:00 UTC5m
2026-07-02 N1844J - Jul 2, 00:10 UTCJul 2, 01:50 UTC1h 40m
2026-06-25 N1844J - Jun 25, 16:35 UTCJun 25, 17:39 UTC1h 5m
2026-06-24 N1844J - Jun 24, 03:35 UTCJun 24, 04:24 UTC50m
2026-06-24 N1844J - Jun 24, 00:44 UTCJun 24, 02:30 UTC1h 45m
2026-06-20 N1844J - Jun 20, 01:29 UTCJun 20, 02:00 UTC30m
2026-06-19 N1844J - Jun 19, 23:39 UTCJun 19, 23:54 UTC15m
2026-06-18 N1844J - Jun 18, 17:35 UTCJun 18, 18:50 UTC1h 15m
2026-06-18 N1844J - Jun 18, 01:05 UTCJun 18, 03:00 UTC1h 55m
2026-06-17 N1844J - Jun 17, 00:00 UTCJun 17, 00:15 UTC15m
2026-06-16 N1844J - Jun 16, 23:40 UTCJun 16, 23:50 UTC10m
2026-06-16 N1844J - Jun 16, 23:20 UTCJun 16, 23:35 UTC15m
2026-06-16 N1844J - Jun 16, 22:20 UTCJun 16, 22:35 UTC15m
2026-06-16 N1844J - Jun 16, 21:35 UTCJun 16, 21:50 UTC15m
2026-06-15 N1844J - Jun 15, 17:10 UTCJun 15, 17:50 UTC40m
2026-06-12 N1844J - Jun 12, 00:55 UTCJun 12, 01:05 UTC10m
2026-06-12 N1844J - Jun 12, 00:10 UTCJun 12, 00:40 UTC31m
2026-06-11 N1844J - Jun 11, 23:50 UTCJun 12, 00:05 UTC15m
2026-06-11 N1844J - Jun 11, 01:15 UTCJun 11, 03:20 UTC2h 5m
2026-06-02 N1844J - Jun 2, 23:35 UTCJun 3, 00:45 UTC1h 10m
2026-06-02 N1844J - Jun 2, 21:45 UTCJun 2, 22:45 UTC1h 0m
2026-05-28 N1844J - May 28, 05:05 UTCMay 28, 05:20 UTC15m
2026-05-28 N1844J - May 28, 03:30 UTCMay 28, 05:00 UTC1h 30m
2026-05-21 N1844J - May 21, 23:35 UTCMay 22, 00:30 UTC55m
2026-05-21 N1844J - May 21, 21:20 UTCMay 21, 22:15 UTC55m
2026-05-03 N1844J - May 3, 00:40 UTCMay 3, 01:35 UTC55m
2026-05-02 N1844J CKR → MVW May 2, 23:45 UTCMay 3, 00:05 UTC20m
2026-05-02 N1844J - May 2, 20:40 UTCMay 2, 22:15 UTC1h 35m
2026-05-02 N1844J - May 2, 03:35 UTCMay 2, 04:40 UTC1h 5m
2026-05-02 N1844J - May 2, 02:05 UTCMay 2, 02:15 UTC10m
2026-05-02 N1844J - May 2, 00:45 UTCMay 2, 01:20 UTC35m
2026-05-01 N1844J - May 1, 03:05 UTCMay 1, 03:25 UTC20m
2026-04-30 N1844J - Apr 30, 23:20 UTCApr 30, 23:50 UTC30m
2026-04-29 N1844J - Apr 29, 01:50 UTCApr 29, 01:54 UTC5m
2026-04-29 N1844J - Apr 29, 00:50 UTCApr 29, 01:45 UTC55m
2026-04-28 N1844J - Apr 28, 22:55 UTCApr 28, 23:50 UTC55m
2026-04-25 N1844J - Apr 25, 01:20 UTCApr 25, 01:45 UTC25m
2026-04-25 N1844J - Apr 25, 00:10 UTCApr 25, 00:40 UTC30m
2026-04-24 N1844J - Apr 24, 22:10 UTCApr 24, 22:50 UTC40m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N1844J page for operator, model, and routing details .

Mode-S A15275 frequently asked

What is Mode-S code A15275?
A15275 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N1844J.
Where is Mode-S A15275 registered?
Mode-S code A15275 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A15275 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A15275, octal 50251165, decimal 10,572,405.
What flights does A15275 operate?
Mode-S A15275 has broadcast 1 distinct callsign, including N1844J.